If a relation is a function, how many y-values can an x-value have?
Yes, see solution.
Practice makes perfect
For a relation to be a function, each x-value can only be paired with one y-value, but one y-value can be paired with multiple x-values. Let's play close attention to the graph below.
Looking at the graph, we can see that each x-value corresponds to exactly one y-value. This means that the graph represents a function.
